RF2958TR13 RF Micro Devices, RF2958TR13 Datasheet

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RF2958TR13

Manufacturer Part Number
RF2958TR13
Description
Manufacturer
RF Micro Devices
Datasheet

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Part Number
Manufacturer
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Price
Part Number:
RF2958TR13
Manufacturer:
ICS
Quantity:
60
Product Description
The RF2958 is a single-chip transceiver specifically
designed for IEEE 802.11b applications. The part
includes all required transceiver functions. The receiver
includes: an LNA and downconverter; complete synthe-
sizers and VCO’s; direct conversion from IF receiver with
variable gain control; quadrature demodulator; I/Q base-
band amplifiers; and, on-chip baseband filters. For the
transmit side, a QPSK modulator and upconverter are
provided along with the synthesizer, VCO, and PA driver.
A minimum number of external components are required,
resulting in an ultra-compact low-cost radio design. Two-
cell or regulated three-cell (3.6V maximum) battery appli-
cations are supported by the part. The RF2958 is also
part of a 2.4GHz chipset along with our high-efficiency
GaAs HBT PA and the RF3002 Baseband Processor.
Optimum Technology Matching® Applied
Rev A0 050209
Typical Applications
• IEEE 802.11b WLANs
• Wireless Residential Gateways
• Secure Communication Links
Si BJT
Si Bi-CMOS
InGaP/HBT
VCC RF2
VCC RF1
IF OUT+
IF OUT-
VCC IF
R BIAS
IF IN+
IF IN-
1
2
3
4
5
6
7
8
32
Functional Block Diagram
9
D/A
3rd Order
Bes LPF
31
10
MUX
Regulator 1
3rd Order
Voltage
Bes LPF
RX IF
30
11
GaAs HBT
SiGe HBT
GaN HEMT
29
Regulator 2
3rd Order
12
Bes LPF
Voltage
RX IF
28
LC Trap
27
3rd Order
Bes LPF
13
26
0
25
RF Synth Analog
IF Synth Analog
14
SPI Serial Port
Frac-N Digital
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
P & R
15
Regulator
Voltage
Digital
Regulator
Regulator
RF PLL
Voltage
RF PLL
Voltage
16
24
23
22
21
20
19
18
17
VREF
DIG REG
VCC PLL4
SCLK
SSB
SDI
MCLK
MODE0
2.4GHz SPREAD-SPECTRUM TRANSCEIVER
• High Speed Digital Links
• Wireless Security
• Digital Cordless Telephones
Features
Ordering Information
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
• Complete IEEE802.11b Transceiver
• Small 32-pin Leadless Package
• Minimal External Components Required
• Low Receive Current
• High Performance Super-het Architecture
RF2958
RF2958TR13
RF2958 PCBA
including VCOs
Package Style: QFN, 32-Pin, 5x5
± 0.050
3.400
5.000
0.500
TYP
2.4GHz Spread-Spectrum Transceiver
2.4GHz Spread-Spectrum Transceiver (Tape & Reel)
Fully Assembled Evaluation Board
± 0.050 TYP
± 0.050
3.400
5.000
0.400
Shaded lead is pin 1.
Dimensions in mm.
0.100
M
C
RF2958
± 0.070
0.080 C
0.900
http://www.rfmd.com
Fax (336) 664 0454
Tel (336) 664 1233
-C-
0.025
± 0.010
SEATING
PLANE
SCALE:
NONE
11-263

RF2958TR13 Summary of contents

Page 1

... SCLK • High Performance Super-het Architecture SPI Serial Port 20 SSB Frac-N Digital P & SDI Ordering Information Digital Voltage 18 MCLK Regulator RF2958 RF2958TR13 RF PLL Voltage RF2958 PCBA Regulator 17 MODE0 Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA RF2958 5.000 0.900 ± 0.050 ± ...

Page 2

... Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). ...

Page 3

Parameter Min. Receiver IF VGA/Baseband, cont’d Group Delay Filter Rejection Output Impedance I/Q Magnitude Error I/Q Phase Error I/Q DC Offset DC Step V 1.65 REF V Output Current REF Transmitter Modulator/Baseband I/Q Magnitude Error I/Q Phase Error Input Signal ...

Page 4

RF2958 Parameter Min. Digital Input Specifications Apply to pins: SSB, SDI, SCLK, MODE0, MODE1 Input High Voltage (V ) 0.7V IH Input Low Voltage ( Input High Static Current ( Input Low Static Current (I ) ...

Page 5

Digital Timing Specifications T CS SSB SCLK MSB SDI T SU Internal Recal pulse Rev A0 050209 T T CWH CWL T HLD RF2958 LSB T RC 11-267 ...

Page 6

RF2958 Pin Function Description 1 IF IN+ Differential input from IF SAW filter. See application schematic for matching circuit IN- See pin 1. 3 VCC IF Power supply for IF circuitry. Provide 330pF bypass capacitor close to this ...

Page 7

IF IN IN- 2 VCC BIAS 4 VCC RF2 VCC RF1 6 IF OUT OUT+ 8 Rev A0 050209 Pin Out ...

Page 8

RF2958 Detailed Functional Block Diagram IN+ 1 3rd Order Bes LPF IF IN- 2 VCC BIAS 4 D/A MUX VCC RF2 5 VCC RF1 6 IF OUT OUT 11-270 ...

Page 9

The RF2958 is a single-chip transceiver designed specifically for IEEE 802.11b wireless LAN applications. In addition to typical transceiver functions of RF conversion of both the transmit and receive signals, the RF2958 incorporates a low- noise amplifier (LNA) and a ...

Page 10

RF2958 GENERAL APPLICATION INFORMATION This part is used at high frequencies. Proper attention to layout and component selection is critical in order to achieve the specified performance. Values for DC blocking capacitors and power supply bypass capacitors should be selected ...

Page 11

IF/Baseband The filtered IF signal is processed through a variable gain amplifier controlled through the RX VGC pin. The IF signal is then downconverted to baseband I and Q signals, which are then filtered on-chip with third order Bessel filters. ...

Page 12

RF2958 SERIAL DATA INTERFACE A three wire serial data interface allows user programming of the internal control registers in the RF2958. The serial data interface consists of the serial select (SSB), serial data in (SDI) and serial clock (SCLK) pins. ...

Page 13

REGISTER DETAILS The individual registers and bits are described below. A write instruction to address 11111 causes global reset. All pro- gramming values are binary unless otherwise specified. Configuration Register 1 (CFG1)-Address 00000 Location Bit Name CFG1(17:16) reserved CFG1(15:14) REF_SEL(1:0) ...

Page 14

RF2958 IF PLL Register 2 (IFPLL2)-Address 00010 Location Bit Name IFPLL2(17:16) Reserved IFPLL2(15:0) IF_N(15:0) IF PLL Register 3 (IFPLL3)-Address 00011 Location Bit Name IFPLL3(17) Reserved IFPLL3(16:8) DN1(16:8) IFPLL3(7:4) CT_DEF1(3:0) IFPLL3(3:0) KV_DEF1(3:0) RF PLL Register 4 (RFPLL1)-Address 00100 Location Bit Name ...

Page 15

RF PLL Register 7 (RFPLL4)-Address 00111 Location Bit Name RFPLL4(17) Reserved RFPLL4(16:8) DN(8:0) RFPLL4(7:4) CT_DEF(3:0) RFPLL4(3:0) KV_DEF(3:0) Calibration Register 8 (CAL1)-Address 01000 Location Bit Name CAL1(17:13) TVCO(4:0) CAL1(12:8) TLOCK(4:0) CAL1(7:3) M_CT_VALUE (4:0) CAL1(2:0) LD_WINDOW (2:0) TXRX Register 9 (TXRX1)-Address 01001 ...

Page 16

RF2958 Power Control Register 10 (PCNT1)-Address 01010 Location Bit Name PCNT1(17:15) MID_BIAS(2:0) PCNT1(14:9) P_DESIRED (5:0) PCNT1(8:3) PC_OFFSET (5:0) PCNT1(2:0) TX_DELAY (2:0) Power Control Register 11 (PCNT2)-Address 01011 Location Bit Name PCNT2(17:12) MAX_POWER (5:0) PCNT2(11:6) MID_POWER (5:0) PCNT2(5:0) MIN_POWER (5:0) VCOT1 ...

Page 17

Demodulator Gain versus RXVGC versus Temperature 80.0 Demodulator Gain vs. RXVGC @ -30°C Demodulator Gain vs. RXVGC @ 25°C 70.0 Demodulator Gain vs. RXVGC @ 70°C 60.0 50.0 40.0 30.0 20.0 10.0 0.0 -10.0 1.2 1.3 1.4 1.5 1.6 RXVGC ...

Page 18

RF2958 Upconverter Gain versus Analog TXVGC 30.0 Upconverter Gain vs. TXVGC @ -30°C Upconverter Gain vs. TXVGC @ 25°C 25.0 Upconverter Gain vs. TXVGC @ 70°C 20.0 15.0 10.0 5.0 0.0 -5.0 -10.0 0.5 0.7 0.9 1.1 1.3 1.5 TXVGC ...

Page 19

PCB Surface Finish The PCB surface finish used for RFMD’s qualification process is Electroless Nickel, immersion Gold. Typical thickness is 3µinch to 8µinch Gold over 180µinch Nickel. PCB Land Pattern Recommendation PCB land patterns are based on IPC-SM-782 standards when ...

Page 20

RF2958 PCB Solder Mask Pattern Liquid Photo-Imageable (LPI) solder mask is recommended. The solder mask footprint will match what is shown for the PCB Metal Land Pattern with a 3mil expansion to accommodate solder mask registration clearance around all pads. ...

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